<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="./css/bootstrap.min.css">
    <script src="./js/jquery-1.12.4.min.js"></script>
    <script src="./js/bootstrap.min.js"></script>
</head>

<body>
    <br>
    <br>
    <br>
    <br>
    <br>
    <div class="container">

        <div class="row">

            <div class="btn-group">

                <input type="button" value="按钮1" class="btn btn-default">
                <input type="button" value="按钮2" class="btn btn-default">
                <input type="button" value="按钮3" class="btn btn-default">
                <input type="button" value="按钮4" class="btn btn-default">
                <input type="button" value="按钮5" class="btn btn-default">

            </div>
        </div>
        <div class="row">

            <div class="btn-group btn-group-vertical">

                <input type="button" value="按钮1" class="btn btn-default">
                <input type="button" value="按钮2" class="btn btn-default">
                <input type="button" value="按钮3" class="btn btn-default">
                <input type="button" value="按钮4" class="btn btn-default">
                <input type="button" value="按钮5" class="btn btn-default">

            </div>
        </div>
        <div class="row">
            <div class="btn-group btn-group-sm">
                <a href="" class="btn btn-default">按钮1</a>
                <a href="" class="btn btn-default">按钮2</a>
                <a href="" class="btn btn-default">按钮3</a>


            </div>
        </div>
        <div class="row">
            <div class="btn-group btn-group-lg">

                <button type="button" class="btn btn-default">按钮1</button>
                <button type="button" class="btn btn-default">按钮2</button>
                <button type="button" class="btn btn-default">按钮3</button>
                <button type="button" class="btn btn-default">按钮4</button>
                <button type="button" class="btn btn-default">按钮5</button>
                <button type="button" class="btn btn-default">按钮6</button>

            </div>
        </div>

    </div>


    </div>


</body>

</html>